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CAMP Annual Report: Page 6

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Modeling of the Chemical‑Mechanical Polishing Process

Professors Goodarz Ahmadi and S.V. Babu, in collaboration with the JSR company, are developing new models for the chemical‑mechanical polishing of low-k materials.  Their analysis includes the influence of abrasive particles and pad surface micro-roughness.   Earlier, Professor Ahmadi and his students studied the effect of abrasive particle shapes, slurry pH, and colloidal forces on the CMP removal rate. 

NANOSYSTEMS       

Variations on Nanoparticle Research Themes

 CAMP Senior University Professor Richard Partch's research group enjoys advancing both fundamental and applied aspects of nanoparticle technology.

Topics under active investigation include the following:

1) Preparation and evaluation of filled inorganic and organic composites for better thermal management in electronic devices such as thermal diffusion rollers in copy machines, in collaboration with Xerox-Webster, NY scientists and co-funded by NYSERDA and Xerox.

 2) Investigation of both dissolved and dispersed phases in slurries used in CMP. Core-shell abrasives are being created for better polishing selectivity and fundamental BHT chemical interaction information is being investigated to improve the C part of CMP. This research is funded by BASF and Micron.

 3) Determination of possible catalytic effect of high surface area metals can enhance already known methods for conversion of waste organics into fuel oil; and, of optimum continuous reactor design for waste water treatment biomass feed.

 4) Application of pi-pi complexation between acceptor and donor aromatics is the principle being employed for creating filter adsorbants capable of removal of biotoxins commonly in contact with humans. One focus is on removal of the synthetic estrogen bis-phenol A leached from plastic bottles and cans into drinking water and food. Another is carbofuran used on crops and incorporated into food.

 5)  Studies on dispersions of potential bispectral obscurant nanoparticles.

6)  Preparation of DNA and fluorescent labelled particles for sensing.

U.S. Army Research Project on Smart Responsive Nanocomposites for Soldier Protection includes Photovoltaic Devices and Systems

The Army Research Office (ARO) project on Smart Responsive and Nanocomposite Systems continues at Clarkson University. The research is led by CAMP Director Professor S.V. Babu. It has been extended to include photovoltaic devices and systems.  The team includes CAMP Professors Ahmadi, Shipp, Minko, Partch, Rasmussen, Suni, Goia, Privman, Gracheva, Katz, Roy, Krishnan, McLaughlin, Sokolov, Melman, Cetinkaya, Moosbrugger, Aidun, Cheng, Jha, Marzocca, and Ding. Goals of the project are to develop protective clothing and self-healing composites, and to improve and increase the efficiency of organic and inorganic solar cells.

Probing Surfaces of Cancer Cells with Atomic Force Microscopy and Novel Fluorescent Markers

A group led by Igor Sokolov, Clarkson University Physics Professor and Director of Nanoengineering and Biotechnology Laboratories Center (NABLAB), conducts research in the quest of new nontraditional ways to detect cancer. The Clarkson group consists of Sokolov, professor of physics and chemical & biomolecular science; Craig D. Woodworth, professor of biology; Maxim Dokukin, Shajesh Palantavida, both postdoctoral fellows; Nataliia Guz and Dmytro Volkov, both physics graduate students.

The group uses atomic force microscopy (AFM), one of the major instruments responsible for the emergence of modern nanotechnology, to study human cancerous cells. Their recent finding of unknown features on the surface of cancerous cells was published in the top nanotechnology journal Nature Nanotechnology. Sokolov’s group has also recently synthesized ultrabright fluorescent nanoparticles, which are more than 30 times brighter than quantum dots. The research results will be published in Small, the second top journal in multidisciplinary science- a patent is pending. These particles are planned to be used to detect epithelial cancers. Detection of cancer at the early stages will help to eliminate the fatal nature of the disease.

Dr. Sokolov recently received the Veeco Labs Research Innovation Award “HarmoniX Innovation"   (one of nine Veeco Labs awards for worldwide competition). HarmoniX is a new AFM technique. His group is using this method to advance further in cancer research.  Combining the obtained data with statistical and bio-informatics approaches, they are developing a new tool for the detection of cervical cancer, which would identify cancer down to the single cell level.

Professor Sokolov’s other research interests include sustainable energy projects (advanced materials for solar energy, materials for saving energy, self-healing materials) and the synthesis of fluorescent particles with changing properties depending on the environment (lab-on-a-particle). He also studies the biomaterials, human teeth, biosensors, and insects. In addition he investigates forces between various particles and surfaces in liquids, and does work on the fundamentals of self-assembly. The research is supported by the ARO and NSF.

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STATE-FUNDED RESEARCH PROJECTS

Twelve research projects were supported by the Centers for Advanced Technology (CAT) Program of New York State’s Foundation for Science, Technology, and Innovation (NYSTAR) in the 2009 - 2010 fiscal year. Project titles and principal investigators are listed below for each research area.


Nanosystems

  •  Interaction of Nafion with Carbon, Mica, and Platinum Substrates- S. Minko
  • Metal-Metal Friction Studies for Otis Technology- R. Partch and D. Rasmussen

Particle Transport, Deposition, and Removal

  • Studies of Adhesion between Polymer Particles and Surfaces -W. Ding

 

Particle Synthesis and Properties

  • Improvements in Photovoltaic Cell Efficiencies- D. Goia

 

Thin Films and Coatings

  • Free Form Fiber-S. V. Babu

 

Supporting Technologies 

  • Scanner Laser Vibrometer Equipment Component- P. Marzocca
  • Concretes that Incorporate High Carbon Fly Ash and Foundry Sand Development and Performance Testing-N. Neithalath
  • Development and Construction of a UCT System- C. Cetinkaya
  • Modeling Study and Testing of the Grid Electrostatic Precipitator- J. McLaughlin
  • Tools for Analysis of Early Age Transverse Cracking of Composite Bridge Decks-K. Janoyan
  • Innovative Bridge Research and Deployment Program- K. Janoyan
  • Non-Reference Based Inertial Tracking System for Drifting Sensor Platform- K. Janoyan